./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:28:34,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:28:34,245 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:28:34,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:28:34,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:28:34,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:28:34,265 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:28:34,265 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:28:34,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:28:34,266 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:28:34,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:28:34,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:28:34,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:28:34,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:28:34,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:28:34,268 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:28:34,268 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:28:34,268 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 [2025-03-04 15:28:34,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:28:34,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:28:34,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:28:34,731 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:28:34,732 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:28:34,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2025-03-04 15:28:35,790 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/901ec3bca/34d343e7c3f943f99494747cc2d1446b/FLAGda3611ee4 [2025-03-04 15:28:36,048 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:28:36,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2025-03-04 15:28:36,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/901ec3bca/34d343e7c3f943f99494747cc2d1446b/FLAGda3611ee4 [2025-03-04 15:28:36,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/901ec3bca/34d343e7c3f943f99494747cc2d1446b [2025-03-04 15:28:36,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:28:36,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:28:36,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:28:36,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:28:36,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:28:36,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c6bf27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36, skipping insertion in model container [2025-03-04 15:28:36,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,375 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:28:36,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:28:36,526 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:28:36,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:28:36,570 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:28:36,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36 WrapperNode [2025-03-04 15:28:36,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:28:36,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:28:36,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:28:36,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:28:36,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,603 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 120 [2025-03-04 15:28:36,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:28:36,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:28:36,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:28:36,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:28:36,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,615 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,629 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-04 15:28:36,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,634 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:28:36,642 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:28:36,642 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:28:36,642 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:28:36,643 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (1/1) ... [2025-03-04 15:28:36,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:28:36,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:36,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:28:36,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:28:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:28:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 15:28:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-04 15:28:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:28:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:28:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:28:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:28:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:28:36,686 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:28:36,759 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:28:36,761 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:28:37,023 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:28:37,023 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:28:37,166 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:28:37,167 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:28:37,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:28:37 BoogieIcfgContainer [2025-03-04 15:28:37,168 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:28:37,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:28:37,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:28:37,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:28:37,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:28:36" (1/3) ... [2025-03-04 15:28:37,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0f697e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:28:37, skipping insertion in model container [2025-03-04 15:28:37,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:28:36" (2/3) ... [2025-03-04 15:28:37,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0f697e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:28:37, skipping insertion in model container [2025-03-04 15:28:37,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:28:37" (3/3) ... [2025-03-04 15:28:37,176 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2025-03-04 15:28:37,187 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:28:37,188 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-min-max-inc.wvr.c that has 5 procedures, 78 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-03-04 15:28:37,188 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:28:37,250 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-04 15:28:37,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2025-03-04 15:28:37,317 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2025-03-04 15:28:37,319 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 15:28:37,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 7/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 237 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2025-03-04 15:28:37,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2025-03-04 15:28:37,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 177 flow [2025-03-04 15:28:37,331 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:28:37,339 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@43b3a785, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:28:37,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-03-04 15:28:37,343 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:28:37,343 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2025-03-04 15:28:37,343 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:28:37,343 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:37,344 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:28:37,344 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:28:37,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:37,351 INFO L85 PathProgramCache]: Analyzing trace with hash 472635679, now seen corresponding path program 1 times [2025-03-04 15:28:37,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:37,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310070972] [2025-03-04 15:28:37,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:37,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:28:37,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:28:37,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:37,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310070972] [2025-03-04 15:28:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310070972] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:28:37,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:28:37,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:28:37,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247994869] [2025-03-04 15:28:37,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:37,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:28:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:37,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:28:37,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:28:37,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-04 15:28:37,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:37,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:37,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-04 15:28:37,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:40,734 INFO L124 PetriNetUnfolderBase]: 37330/58506 cut-off events. [2025-03-04 15:28:40,734 INFO L125 PetriNetUnfolderBase]: For 1917/1917 co-relation queries the response was YES. [2025-03-04 15:28:40,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107878 conditions, 58506 events. 37330/58506 cut-off events. For 1917/1917 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475545 event pairs, 27934 based on Foata normal form. 1/51047 useless extension candidates. Maximal degree in co-relation 103409. Up to 47232 conditions per place. [2025-03-04 15:28:41,155 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 49 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2025-03-04 15:28:41,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 289 flow [2025-03-04 15:28:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:28:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:28:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2025-03-04 15:28:41,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2025-03-04 15:28:41,169 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 177 flow. Second operand 4 states and 183 transitions. [2025-03-04 15:28:41,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 289 flow [2025-03-04 15:28:41,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-04 15:28:41,274 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 193 flow [2025-03-04 15:28:41,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2025-03-04 15:28:41,278 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2025-03-04 15:28:41,279 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 193 flow [2025-03-04 15:28:41,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:41,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:41,280 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:41,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:28:41,280 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:28:41,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:41,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1387110353, now seen corresponding path program 1 times [2025-03-04 15:28:41,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:41,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48524515] [2025-03-04 15:28:41,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:41,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:41,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:28:41,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:28:41,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:41,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:41,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:41,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48524515] [2025-03-04 15:28:41,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48524515] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:41,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355076841] [2025-03-04 15:28:41,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:41,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:41,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:41,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:41,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:28:41,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:28:41,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:28:41,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:41,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:41,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:28:41,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:41,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:41,502 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:28:41,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355076841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:28:41,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:28:41,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:28:41,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903036079] [2025-03-04 15:28:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:41,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:28:41,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:41,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:28:41,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:28:41,511 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-04 15:28:41,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:41,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:41,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-04 15:28:41,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:44,381 INFO L124 PetriNetUnfolderBase]: 37330/58505 cut-off events. [2025-03-04 15:28:44,382 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2025-03-04 15:28:44,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107345 conditions, 58505 events. 37330/58505 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475614 event pairs, 27934 based on Foata normal form. 1/51047 useless extension candidates. Maximal degree in co-relation 107318. Up to 47227 conditions per place. [2025-03-04 15:28:44,668 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 45 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2025-03-04 15:28:44,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 293 flow [2025-03-04 15:28:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:28:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:28:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2025-03-04 15:28:44,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2025-03-04 15:28:44,670 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 193 flow. Second operand 6 states and 245 transitions. [2025-03-04 15:28:44,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 293 flow [2025-03-04 15:28:44,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:28:44,671 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 200 flow [2025-03-04 15:28:44,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2025-03-04 15:28:44,672 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2025-03-04 15:28:44,672 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 200 flow [2025-03-04 15:28:44,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:44,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:44,672 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:28:44,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:44,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:44,877 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:28:44,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:44,877 INFO L85 PathProgramCache]: Analyzing trace with hash 50748378, now seen corresponding path program 1 times [2025-03-04 15:28:44,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:44,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106172808] [2025-03-04 15:28:44,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:44,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:44,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:28:44,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:28:44,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:44,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:44,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106172808] [2025-03-04 15:28:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106172808] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977985133] [2025-03-04 15:28:44,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:44,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:44,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:44,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:44,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:28:45,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:28:45,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:28:45,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:45,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:45,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:28:45,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:45,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:45,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977985133] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:45,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:45,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:28:45,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224385609] [2025-03-04 15:28:45,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:45,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:28:45,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:45,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:28:45,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:28:45,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-04 15:28:45,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 33.25) internal successors, (399), 12 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:45,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:45,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-04 15:28:45,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:47,641 INFO L124 PetriNetUnfolderBase]: 37333/58517 cut-off events. [2025-03-04 15:28:47,641 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2025-03-04 15:28:47,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107389 conditions, 58517 events. 37333/58517 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475621 event pairs, 27934 based on Foata normal form. 3/51059 useless extension candidates. Maximal degree in co-relation 107319. Up to 47234 conditions per place. [2025-03-04 15:28:47,888 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 48 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2025-03-04 15:28:47,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 376 flow [2025-03-04 15:28:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:28:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:28:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 384 transitions. [2025-03-04 15:28:47,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2025-03-04 15:28:47,891 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 200 flow. Second operand 10 states and 384 transitions. [2025-03-04 15:28:47,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 376 flow [2025-03-04 15:28:47,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 330 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-04 15:28:47,893 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 252 flow [2025-03-04 15:28:47,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2025-03-04 15:28:47,893 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2025-03-04 15:28:47,893 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 252 flow [2025-03-04 15:28:47,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.25) internal successors, (399), 12 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:47,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:47,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:47,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:48,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-04 15:28:48,098 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:28:48,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:48,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2142795597, now seen corresponding path program 1 times [2025-03-04 15:28:48,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:48,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987998834] [2025-03-04 15:28:48,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:48,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:48,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:28:48,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:28:48,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:48,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:48,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:48,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987998834] [2025-03-04 15:28:48,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987998834] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:28:48,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:28:48,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:28:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141964503] [2025-03-04 15:28:48,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:48,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:28:48,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:48,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:28:48,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:28:48,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-03-04 15:28:48,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:48,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:48,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-03-04 15:28:48,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:50,599 INFO L124 PetriNetUnfolderBase]: 37332/58516 cut-off events. [2025-03-04 15:28:50,600 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2025-03-04 15:28:50,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107386 conditions, 58516 events. 37332/58516 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475528 event pairs, 27934 based on Foata normal form. 1/51059 useless extension candidates. Maximal degree in co-relation 107352. Up to 47238 conditions per place. [2025-03-04 15:28:50,948 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 57 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2025-03-04 15:28:50,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 366 flow [2025-03-04 15:28:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:28:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:28:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2025-03-04 15:28:50,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-03-04 15:28:50,949 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 252 flow. Second operand 3 states and 153 transitions. [2025-03-04 15:28:50,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 366 flow [2025-03-04 15:28:50,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 88 transitions, 356 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-04 15:28:50,951 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 242 flow [2025-03-04 15:28:50,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2025-03-04 15:28:50,952 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2025-03-04 15:28:50,952 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 242 flow [2025-03-04 15:28:50,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:50,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:50,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:50,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:28:50,953 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:28:50,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:50,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1293543205, now seen corresponding path program 1 times [2025-03-04 15:28:50,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:50,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796161836] [2025-03-04 15:28:50,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:50,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:50,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:28:50,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:28:50,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:50,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:51,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:51,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796161836] [2025-03-04 15:28:51,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796161836] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:51,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745239621] [2025-03-04 15:28:51,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:51,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:51,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:51,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:51,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:28:51,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:28:51,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:28:51,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:51,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:51,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-04 15:28:51,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:51,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:28:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:51,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:51,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-04 15:28:51,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-04 15:28:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:51,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745239621] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:51,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:51,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2025-03-04 15:28:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744310297] [2025-03-04 15:28:51,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:51,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 15:28:51,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:51,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 15:28:51,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-03-04 15:28:51,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-03-04 15:28:51,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 13 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:51,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:51,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-03-04 15:28:51,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:56,379 INFO L124 PetriNetUnfolderBase]: 69878/99502 cut-off events. [2025-03-04 15:28:56,380 INFO L125 PetriNetUnfolderBase]: For 738/738 co-relation queries the response was YES. [2025-03-04 15:28:56,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190534 conditions, 99502 events. 69878/99502 cut-off events. For 738/738 co-relation queries the response was YES. Maximal size of possible extension queue 2733. Compared 722994 event pairs, 20121 based on Foata normal form. 0/91084 useless extension candidates. Maximal degree in co-relation 190510. Up to 34221 conditions per place. [2025-03-04 15:28:56,923 INFO L140 encePairwiseOnDemand]: 72/84 looper letters, 132 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2025-03-04 15:28:56,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 176 transitions, 724 flow [2025-03-04 15:28:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 15:28:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 15:28:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 445 transitions. [2025-03-04 15:28:56,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5886243386243386 [2025-03-04 15:28:56,924 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 242 flow. Second operand 9 states and 445 transitions. [2025-03-04 15:28:56,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 176 transitions, 724 flow [2025-03-04 15:28:56,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 176 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:28:56,927 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 309 flow [2025-03-04 15:28:56,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=309, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2025-03-04 15:28:56,927 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2025-03-04 15:28:56,927 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 309 flow [2025-03-04 15:28:56,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 13 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:56,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:56,928 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:56,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 15:28:57,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:57,128 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:28:57,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:57,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1293543204, now seen corresponding path program 1 times [2025-03-04 15:28:57,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:57,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983639099] [2025-03-04 15:28:57,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:57,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:57,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:28:57,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:28:57,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:57,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:28:57,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:57,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983639099] [2025-03-04 15:28:57,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983639099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:28:57,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:28:57,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:28:57,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283420940] [2025-03-04 15:28:57,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:57,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:28:57,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:57,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:28:57,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:28:57,181 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-03-04 15:28:57,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:57,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:57,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-03-04 15:28:57,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:01,572 INFO L124 PetriNetUnfolderBase]: 58857/86155 cut-off events. [2025-03-04 15:29:01,572 INFO L125 PetriNetUnfolderBase]: For 19246/19246 co-relation queries the response was YES. [2025-03-04 15:29:01,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183682 conditions, 86155 events. 58857/86155 cut-off events. For 19246/19246 co-relation queries the response was YES. Maximal size of possible extension queue 2477. Compared 647338 event pairs, 25347 based on Foata normal form. 0/81380 useless extension candidates. Maximal degree in co-relation 183645. Up to 44436 conditions per place. [2025-03-04 15:29:02,068 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 111 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2025-03-04 15:29:02,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 146 transitions, 650 flow [2025-03-04 15:29:02,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2025-03-04 15:29:02,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-03-04 15:29:02,070 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 309 flow. Second operand 4 states and 238 transitions. [2025-03-04 15:29:02,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 146 transitions, 650 flow [2025-03-04 15:29:02,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 146 transitions, 640 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:29:02,111 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 302 flow [2025-03-04 15:29:02,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2025-03-04 15:29:02,114 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 15 predicate places. [2025-03-04 15:29:02,114 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 302 flow [2025-03-04 15:29:02,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:02,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:02,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:02,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:29:02,114 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:29:02,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1344475851, now seen corresponding path program 1 times [2025-03-04 15:29:02,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:02,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862103472] [2025-03-04 15:29:02,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:02,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:02,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:29:02,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:29:02,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:02,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:29:02,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:02,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862103472] [2025-03-04 15:29:02,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862103472] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:02,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:02,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:29:02,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601165176] [2025-03-04 15:29:02,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:02,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:02,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:02,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:02,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:29:02,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-04 15:29:02,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:02,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:02,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-04 15:29:02,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:09,246 INFO L124 PetriNetUnfolderBase]: 97994/146736 cut-off events. [2025-03-04 15:29:09,246 INFO L125 PetriNetUnfolderBase]: For 72356/72356 co-relation queries the response was YES. [2025-03-04 15:29:09,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317488 conditions, 146736 events. 97994/146736 cut-off events. For 72356/72356 co-relation queries the response was YES. Maximal size of possible extension queue 4120. Compared 1217880 event pairs, 11091 based on Foata normal form. 2198/137054 useless extension candidates. Maximal degree in co-relation 317454. Up to 61986 conditions per place. [2025-03-04 15:29:10,224 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 156 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2025-03-04 15:29:10,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 188 transitions, 968 flow [2025-03-04 15:29:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:29:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:29:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 292 transitions. [2025-03-04 15:29:10,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2025-03-04 15:29:10,226 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 302 flow. Second operand 5 states and 292 transitions. [2025-03-04 15:29:10,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 188 transitions, 968 flow [2025-03-04 15:29:10,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 188 transitions, 920 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:29:10,268 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 324 flow [2025-03-04 15:29:10,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2025-03-04 15:29:10,269 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2025-03-04 15:29:10,269 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 324 flow [2025-03-04 15:29:10,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:10,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:10,269 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2025-03-04 15:29:10,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 15:29:10,269 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-04 15:29:10,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1026340556, now seen corresponding path program 2 times [2025-03-04 15:29:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:10,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985281036] [2025-03-04 15:29:10,270 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:10,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:10,276 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-04 15:29:10,279 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 18 statements. [2025-03-04 15:29:10,279 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:29:10,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:29:10,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:10,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985281036] [2025-03-04 15:29:10,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985281036] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:10,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481589286] [2025-03-04 15:29:10,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:10,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:10,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:10,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:10,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:29:10,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-04 15:29:10,361 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 18 statements. [2025-03-04 15:29:10,361 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:29:10,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:10,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 15:29:10,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:29:10,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:29:10,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481589286] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:10,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:10,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2025-03-04 15:29:10,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373265038] [2025-03-04 15:29:10,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:10,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:29:10,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:10,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:29:10,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:29:10,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-04 15:29:10,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:10,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:10,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-04 15:29:10,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand